Door-hanger



(No Model.)

C. W. BULLARD.

DOOR HANGER. No. 450,352. Patented Apr. 14, 1891.

l INVENTOR:

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NITED STATES PATENT FFICE.

CHARLES W. BULLARD, OF CHICAGO, ILLINOIS.

DOOR-HANGER.

SPCFICATION forming part of Letters Eatent No. 450,352, dated April 14, 1891.

Applicationled December 6, 1890. Serial No. 373,829. (No model.)

70 all whom it may concern:

Be it known that I, CHARLES W. BULLARD, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Door-Hangers, of which the following is a specication.

This invention relates to that class of doorhangers in which means are provided to compensate for irregularities in the supportingtracks, the object of the present improvement being to afford a cheap and effective compensating appliance for double-track doorhangers embodying the features of great simplicity and durability of construction combined with compactness and strength of parts. I attain such object by the construction and arrangement of parts illustratedin the accompanying drawings, in which- Figure lis a side elevation of a doubletrack door-hanger embodying my present improvement, a portion of the front track-wheel being shown as broken away; Fig. 2, a horizontal section at line :c fr, Fig. l Fig. 3, asimilar view of -a modication of the construction shown in Figs. l and 2.

Similar numerals of reference indicate like parts in the several views.

Referring to the drawings, l and 2 represent the vrespective `tracks from which the sliding door is suspended, and in the space between which the hanger or suspension bracket 3 moves in the usual manner. The bracket 3 may be of any usual and wellknown construction and provided wit-l1 any suitable means of adjustment to effect a verticalextension and contraction of its parts for the purpose of a vertical adjustment of the door with relation to the tracks, as is quite common in the present type of door-hangers.

In the form of suspension-bracket illustrated in the drawings, 4 is the base or doorattaching member, having vertical guidestems 5, 6 the track-wheel member having guide-sockets 7, and 8 a vertically-arranged screw by which the vertical adjustment of the members 4 and 6 with relation to each other is effected.

The main feature of novelty in the present invention consists in forming the upper end of the suspension-bracket 3 with a transversely-arranged socket or eye that forms a bearing for the trunnion portion 9 of a cranked formation 10, the crank or wrist pins 1l and l2 of which are arranged at diametrically-opposite sides of the trunnion portion and form journals for the pair of independent track-wheels 13 and 14, as shown.

The crank-pins may be formed in an eccentric manner at the ends of the axial trunnion or cylinder 9, having the required diameter, as illustrated in Figs l and 2, so that the pins and trunnion maybe made in one integral piece and slippedl endwise into place in its socket, or they may be arranged at the outer ends of the crank-arms l5 and 16, attached to the central shaft or trunnion 9, as illustrated in Fig. 3, the trunnion in either case being adapted to have a rocking motion in its socket when in use.

With my improved construction, as above described, the track-wheels are capable of an oscillating or rocking movement in a vertical plane with the shaft or trunnion 9 as an axis, the wheels oscillating in unison in such vertical plane, so that as one wheel is thrown up by an irregularity or inequality in its track the other wheel will be correspondingly thrown down, and thus the suspension of the door in its proper plane will be preservedv in an almost perfect manner, and at the same time the wheels will be in nat contact with their respective tracks under any conditions.

The above-mentioned irregularities or inequalities in the tracks are of very frequent occurrence and are mainly due to the imperfect setting of the tracks and to subsequent shrinking, warping, and irregular wear of the tracks by continued use.

Having thus fully described my said invention, what I claim as new, and desire to secure by Letters Patent, is-

l. In a doorhanger,.the combination of a bracket or support from which the door is suspended, a double-crank formation journaled in a transverse direction in said bracket, so as to have a rocking motion, and a pair of independent trackg-wheels journaled separately on the oppositely-arranged crank-pins gf tlle crank formation, substantially as set ort 2. In a door-hanger, the Icombination of a IOO bracket or support from which the door is pins of the crank formation, substantially as suspended, a double-crank formation jourset forth. IO

naled in a transverse direction in the bracket, In testimony whereof Witness my hand so as to have a rocking motion, and consistthis 3d day of December, 1890.

5 ing of an enlarged trunnion portion and CHARLES XV. BULLARD.

crankpins constructed on the ends of the In presence of same, and a pair of track-Wheels journaied JAMES H. GORMLEY,

separately on the oppostely-arranged crank- ROBERT BURNS. 

